This option will become exercisable (“vest”) as to 25% of the original number of Shares on the first anniversary of the Vesting Commencement Date (as defined below) and as to an additional 6.25% of the original number of Shares at the end of each successive quarter following the first anniversary of the Vesting Commencement Date until the fourth anniversary of the Vesting Commencement Date. On the fourth anniversary of the Vesting Commencement Date, this option will be exercisable as to all Shares. For purposes of this Agreement, “Vesting Commencement Date” shall mean ​.

This option will become exercisable (“vest”) as to 25% of the original number of Shares on the first anniversary of the Vesting Commencement Date (as defined below) and as to an additional 2.0833% of the original number of Shares at the end of each successive month following the first anniversary of the Vesting Commencement Date until the fourth anniversary of the Vesting Commencement Date. On the fourth anniversary of the Vesting Commencement Date, this option will be exercisable as to all Shares. For purposes of this Agreement, “Vesting Commencement Date” shall mean ​.

This option will become exercisable (“vest”) as to % of the original number of Shares on the [first] anniversary of the Grant Date and as to an additional % of the original number of Shares at the end of each successive [three month] period following the first anniversary of the Grant Date until the [fourth] anniversary of the Grant Date.

This option will become exercisable (“vest”) as to 1/4th of the original number of Shares on the first anniversary of ​ and as to an additional 1/48th of the original number of Shares at the end of each successive one month period following the first anniversary of ​ until the fourth anniversary of ​.